Novel laser bruting machine

ABSTRACT

A Novel Laser Bruting machine consists of mainly three sections (i) Diamond Holder ( 8 ) (ii) Set up device ( 3 ) &amp; (iii) Processing device ( 4 ). Diamond holder ( 8 ) consists of rough diamond ( 5 ), stitching die ( 6 ) &amp; magnetic die ( 7 ). Also the rough diamond stone to be centered and bruted is stitched on top of stitching die ( 6 ) by adhesive &amp; heat. The stitching die ( 6 ) is then fixed on top of the magnetic die ( 7 ). Setup device ( 3 ) consist of CNC interface &amp; video system. The diamond which is to be centered and hence diamond holder is put vertically on motorized rotatable platform ( 11 ). After completion of centering the diamond the diamond holder is carried to processing device &amp; fixed horizontally on motorized rotatable platform ( 23 ) of processing device ( 4 ). Processing device consist of CNC Interface, Heat Exchanger ( 25 ), Video system, Beam delivery mechanism ( 26 ), Laser source ( 27 ), RF-Q Switch driver ( 28 ), Power supply ( 29 ) &amp; stabilizer. Beam delivery mechanism of processing device consists of (i) Bruting process system and (ii) Girdle polishing system. With the standard software computer suggest an optimal cut to have accurate rounded shape of the diamond taking dimensions &amp; shape into account.

TECHNICAL FIELD

The present invention relates to a Novel Laser Bruting Machine.

The diamond has always exercised an irresistible seductive power andacquired an almost mythical fame because it is the most expensive ofgems and the hardest of all minerals. Each diamond stone must thereforebe studied in detail in order to determine the most advantageous mannerto work it with the least loss of weight. In its unpolished form, adiamond is a rather vague crystal form, without any real luster. Only asuccession of process such as marking, cleaving, sawing, girdling, etc.gives it its final facet form and brilliance. Girdling is the roundingof the base of sawn (or cleaved) piece so that it has more or less theform of a polished diamond. In conventional machine to achieve girdlingof rough diamond stone, the sawn diamond is mounted on the chuck of alathe and the desired rounded form is achieved by turning it againstanother diamond, as the cutting tool. The excess surface of the roughdiamond cut with the conventional machine is imprecise. The conventionalbruting machine works with lower speed and has the high weight loss.This is due to the cutting force spreads to other parts of the diamond.As each diamond is unique it has become imperative to develop newtechniques in order to improve the productivity of the diamond industry.

BACKGROUND ART

A novel laser bruting machine is invented to overcome above limitationsexperienced by conventional bruting machine. With a novel laser brutingmachine, bruting becomes a non-contact very fast process compared toconventional bruting machine. As laser bruting being a non-contactprocess gives more speed, reduces weight loss significantly and keepsthe shape of diamond uniform. In novel laser bruting machine thecomputer becomes an important element in cu98tting of diamond. With thestandard software computer suggest an optimal cut to have accuraterounded shape of the diamond taking dimensions & shape into account.Also the rough diamond stone to be centered and bruted is lit up byilluminating sources and these illuminating sources consist of pluralityof LED's so the eye gets the impression that is always the same side ofthe stone that is lit and hence the illuminated rough diamond can bewatched on CCTV through video system consist of CDD cameras. This is auseful technique, because novel bruting machine can check the process atall times without stopping the machine. Summing up all the advantagesproductivity increases considerably with a novel laser bruting machine.

DISCLOSURE OF THE INVENTION

The present invention will be described with greater specific andclarity with reference to following drawings:

FIG. 1 represents front view of bruting machine.

FIG. 2 represents diamond holder.

FIG. 3 represents top view of rough diamond with possible maximumdiameter

FIG. 4 represents front view of setup device.

FIG. 5 represents side view of setup device.

FIG. 6 represents top view of setup device.

FIG. 7 represents front view of bruting processing system.

FIG. 8 represents front view of girdle polishing system.

FIG. 9 represents block diagram of Beam delivery mechanism.

FIG. 10 represents trolley containing power supply and heat exchanger.

FIG. 11 represents block diagram of cooling system & chilling system ofheat exchanger.

FIG. 12 represents front view of chilling water tank.

FIG. 13 represents front view of split tank.

FIG. 14 represents diamond

FIG. 15 represents flow chart.

FIG. 16 a represents random/initial position of rough diamond stone.

FIG. 16 b represents position of center of rough diamond stone onX-axis.

FIG. 16 c represents position of rough diamond stone when it iscentered.

A Novel Laser Bruting Machine consist of (i) diamond holder 8 (ii) Setupdevice 3, & (iii) processing device 4; diamond holder 8 consist ofstitching die 6, magnetic die 7 and rough diamond 5; setup device 3consist of CNC interface, video system; Processing device 4 consists ofCNC interface, heat exchanger 25, video system, beam delivery mechanism26, laser source 27, RF-Q Switch driver 28, power supply 29 &stabilizer.

Bruting machine 1 which is accommodated on aluminum frame 2 consists ofmainly three sections.

(1) Diamond Holder 8

(2) Set up device 3

(3) Processing device 4

(1) Diamond Holder 8: A rough diamond 5 to be processed for Bruting orGirdle Polishing is stitched on top of the stitching die 6 by adhesive &heat Due to magnetism of magnetic die 7, stitching die 6 is fixed on topof magnetic die 7. Combination of stitching die 6 and magnetic die 7 isreferred to as Diamond holder 8.

An automated gemstone/rough diamond stone 5 centering and datamanagement system is provided to setup device 3. The physical data of arough diamond stone/gemstone 5 is determined relative to the measuredspectral response of light energy incident to a gemstone 5. Gemstone 5is illuminated by a plurality of light sources such that the spectralresponse of the gemstone 5 is captured as a pixel data set, gauged,quantified and recorded for future reference via CCD cameras. A setupdevice 3 provides a imaging station for the automated centering andquantifying physical data of gemstone 5. The video system/imagingstation is linked to computer/analysis station for communicatingcaptured incident light data sets thereto. The analysis station/computer16 employs a data processor and model database for assessing thephysical data of the gemstone 5 by way of the communicated pixel datasets. The spectral response of a gemstone 5 to the incident lightsources is quantified relative to model pixel data sets of the databaseand recorded for future reference therein. The operation of the setupdevice 3 is controlled by a control control and instruction set.

The data processor/control card of the analysis station/computer 16provides an instruction set for facilitating communication with thesetup device 3, analyzing communicated pixel sets. The instruction setincludes analytical and statistical image models, which extractpertinent physical data of gemstone from the pixel data sets.Additionally, the analysis station includes mass storage memory devicesfor storing the reference value database; analysis instruction set, andreport information, which may include text as well as visual data. Thephysical data of gemstone 5 are communicated from the setup device 3 tothe computer 21 of processing device 4 by means of LAN.

The control data processor/control card of the setup device 3 &processing device 4 provides an instruction set for automating the stepsnecessary to precisely position and operate the imaging hardware. Theimaging system/video system of set up device 3 & processing device 4extract consistently and accurately, size, shape, and proportioninformation from the images of a gemstone 5 using the data processinginstruction set.

(2) Setup Device 3 Consist of CNC Interface & Video System

(I) CNC INTERFACE: CNC Interface of setup device 3 comprising ofMotorized X axis positioner 9, Motorized rotatable platform 11,Motorized up/down positioner 12, Drive cards 13,14,15, Control card,Computer 16 & Stepper Motors.

(II) Video System of setup device 3 consists of Upper CCD Camera 17 &Lower CCD camera 18.

For accurate girdling/rounding or to remove surrounding excess surfaceof rough diamond 5 it is essential that rough diamond 5 should haverotating/circular motion around its center point for which it isrequired that rough diamond 5 along with stitching die 6 should beplaced on center of top of the magnetic die 7 and it is done by CNCInterface, Computer 16 with standard software and Monitor 19.

Example:

Because of the Video system, rough diamond 5 appears on the monitor 19.As upper CCD camera 17 & Lower CCD camera 18 are being used, one hasoption for watching rough diamond 5 either in elevation or plan view.Supposing surface of the rough diamond 5 is being selected by 3-pointmethod considering top view/plan view of rough diamond 5. Then by mouseclicking three random end points of rough diamond 5 are selected andwith standard software it gives physical data of rough diamond 5 andalso puts stitching die 6 on center of top of the magnetic die 7automatically using pusher rod 10 of motorized X axis positioner 9 &motorized rotatable platform 11. The physical data of rough diamond 5 &predicted finished diamond 20 can be accessed in processing device 4 ascomputers 16 & 21 of setup device 3 and processing device 4 respectivelyare connected with LAN.

Functioning of CNC Interface of Setup Device 3:

Example:

Referring to FIG. 16 a, assume that center of rough diamond 5 is P(x,y)and thus it is offset from O(0,0). It represents initial position ofrough diamond 5 placed on motorized rotatable platform 11 vertically.

Referring to FIG. 16 b, computerized vision system will measure theangle to rotate and by rotary motion, center P of rough diamond 5 isbrought on X axis through motorized rotatable platform 11. Stepper motordrives the motorized rotatable platform 11 and hence diamond holder 8which is placed on motorized rotatable platform 11 also rotates andtakes the position on X-axis.

Referring to FIG. 16 c, to match the center P with O, Pusher rod 10which is fixed with Motorized X axis positioner 9 pushes P towards O andhence stitching die 6 is placed on center of top of magnetic die 7.Motorized X axis positioner 9 is driven by stepper motor.

If elevation view or plan view of rough diamond 5 do hot appear clearlyon monitor 19 then Motorized up/down positioner 12 comes into action togive clear image of rough diamond 5 on monitor 19 by moving vertically.Motorized Up/down positioner 12 is driven by stepper motor.

Drive cards 13,14 & 15 are connected to motorized X-axis positioner 9,motorized up/down positioner 12 & motorized rotatable platform 11respectively. Drive cards 13,14,15 are also connected with computer 16.Drive cards 13,14,15 amplify the electronic signal coming from computer16 and provides amplified electronic signal to Motorized X axispositioner 9, Motorized up/down positioner 12, & Motorized rotatableplatform 11. A contol card which is placed in the computer 16 controlsthe movement of motorized X axis positioner 9, Motorized up/downpositioner 12 & Motorized rotatable platform 11. Also limit switches areprovided to each end of motorized X axis positioner 9, motorizedrotatable platform 11 & motorized up/down positioner 12 to sense thehome & end position. To switch on or off the drive cards 13,14,15, drivecard power supply 22 is connected to drive cards 13,14,15.

(3) Processing Device 4:

Diamond holder 8 is carried to processing device 4 following the processof centering the stitching die 6 on magnetic die 7. Diamond holder 8 isfixed horizontally on motorized rotatable platform 23. As computer 16 ofsetup device 3 and computer 21 of processing device 4 are connected viaLAN and hence physical data of rough diamond 5 taken from setup device 3is accessed on monitor 24 through standard software installed incomputer 21 of processing device 4.

Mechanism of Processing Device 4:

Processing device 4 consist of CNC Interface, Heat Exchanger 25, Videosystem, Beam delivery mechanism 26, Laser source 27, RF-Q Switch driver28 & Power supply 29.

(I) CNC Interface of processing device 4 consist of Motorized Y-axispositioner 30, Motorized rotatable platform s, Motorized X axispositioner 31, Computer 21, Monitor 24, CCTV 32, Drive cads 33,34,35,drive card power supply 36 & stepper motors to drive Motorized Y-axispositioner 30, Motorized rotatable platform 23 & Motorized X axispositioner 31.

(II) Heat Exchanger 25 consist of Cooling system 37, Chilling system 38,Interlock system 39. Cooling system 37 associated with de-ionized watercirculation from cooling system 37 to Laser head 43 & Q-switch 42 andvice versa. Chilling system 38 associated with water circulation fromHeat exchanger 25 to chilling pump system 48 and vice versa. Chillingpump system 48 consist of chilling water tank 70 & split tank 71. Heatexchanger 25 is connected to Power supply 29 via interlock cable.Interlock system 39 saves machine from getting damaged by switching offthe power supply 29 automatically if (i) flow and/or (ii) level and/or(iii) temperature of de-ionized water unnecessarily decreases orincreases. Interlock system 39 of heat exchanger 25 comprising of flowLED 49, Level LED 50 & Temperature LED 51.

(III) Video system: Video system of processing device 4 comprising ofupper CCD Camera 52 and lower CCD camera 53.

(IV) Beam delivery mechanism 26 of processing device 4 consists of (i)Bruting process system 54 and (ii) Girdle polishing system 55. Brutingprocess system 54 consists of (a) sliding beam bender 56 (b) lower beambender 57 & (c) lower focusing device 58. Girdle Polishing system 55consist of (a) upper beam bender 59 (b) upper focusing device 60.Sliding beam bender 56, lower beam bender 57 and upper beam bender 59are placed at 45° with respect to incoming laser beam. Lower focusingdevice 58 and upper focusing device 60 have illuminating source toilluminate rough diamond 5. Each illuminating source has plurality ofLED's.

(V) Laser Source 27 consist of back mirror 40, Apertures 41,41, Q-switch42, Laser head 43, shutter s, polariser 45, front mirror 46 & beamexpander 47.

Laser head 43 is the crucial part to generate the laser light. Frontmirror 46 and back mirror 40 amplifies the laser light by providingfeedback. Q-switch 42 is used to store the laser light energy to emit asa burst of high peak power. Safety shutter 44 blocks the laser beam incase of electrical failure. Safety shutter terminates laser by blockingthe laser beam path and preventing emission of laser radiation out ofthe laser source. The safety shutter 44 is actuated by toggle switch.Apertures 41,41 restrict the light amplification along the off-axis ofthe resonator to provide sharp frequency band. Beam expander 47 expandsthe laser beam to minimize its divergence. To polarize laser beampolarizer 45 is used.

(VI) RF-Q Switch driver 28: To get the pulsed laser output with highpeak power, the laser is operated in Q-Switch mode. The transducer inacoustic-optic Q-switch 42 requires RF power for operation of Q-switch42 and such requirement is fulfilled by RF-Q Switch driver 28. The RFsource is pulsed at frequencies from 0.1 KHz to 50 KHz corresponding tothe desired pulse repetition rate of the laser. The quartz cell beingswitched with such a high frequency needs cooling. Therefore theQ-switch 42 also becomes cool. To operate Q-Switch 42 in pulsed mode,RF-Q Switch driver 28 is connected to Q-Switch 42 and computer 21.Computer 21 sends the frequency data to RF-Q switch driver 28 andaccordingly laser in laser source is operated in Q-switch mode. AsQ-switch 42 is being switched with such a high frequency, it is cooledby circulation of de-ionized water for repetitive operations andtherefore interlock system is provided.

(VII) Power supply 29: It ignites and controls the intensity of thelaser light emitted by the laser lamp (Kr/Xe arc lamp). The intensity oflight produced by the lamp is used for pumping the Nd atoms in Nd:YAGrod. Once the discharge in the lamp is produced, then by changing thecurrent flowing through the lamp, the intensity of light emitted by thelamp can be controlled. In many applications laser is not usedcontinuously and therefore the power supply 29 is provided with aspecial feature of standby mode which keep alive the discharge in thelamp by producing the optimum current required for the lamp to maintainthe discharge in lamp. This particular arrangement is very useful inincreasing the operational life of the lamp and also that of powersupply. Because this will save the whole process of generating thetrigger pulse for igniting the lamp.

Function of Processing Device 4:

A diamond holder 8 which consist of stitching die 6 and magnetic die 7is carried from setup device 3 and fixed horizontally to motorizedrotatable platform 23. In bruting process laser beam coming from lasersource 27 falls on sliding beam bender 56 from which it falls on lowerbeam bender 57 and hence laser beam coming from lower beam bender 57which is then focused by lower focusing device 58 and finally thefocused laser beam falls on gemstone/rough diamond stone 5. Andtherefore maximum diameter 61 of rough diamond stone/gemstone 5 isachieved by removing excess surface from it by rotary motion anddisplacement on particular axis.

Also maximum diameter 61 of rough diamond 5 is achieved with the girdlepolishing process. In girdle polishing process laser beam coming fromlaser source 27 falls on upper beam bender 59 bypassing sliding beambender 56. A laser beam coming from upper beam bender 59, which is thenfocused by upper focusing device 60 and hence focused laser beam fallson rough diamond stone 5.

Application of Bruting process 54 or Girdle polishing process 55 is toobtain maximum diameter 61 from rough diamond 5 by removing excesssurrounding surface from rough diamond 5. After Bruting process 54 orGirdle polishing process 55 the shape of rough diamond 5 is convertedinto cylindrical shape in general. To remove excess surrounding surfaceof rough diamond 5 laser beam from laser source 27 is used.

Procedure for Switching on Heat Exchanger 25 & Power Supply 29:

Pump on/off knob 62 is accommodated in Heat exchanger 25, which is kept“on” initially and Pump LED 63 is operated by Pump on/off knob 62. Alsodigital temperature controlling unit 72 & Inter lock system 39 areprovided to heat exchanger 25. Then in Power supply 29, T.P. 64 and Lamp65 switches are switched “on” to trigger laser lamp of laser source 27.Also as power supply 29 is connected with heat exchanger 25 viainterlock cable and therefore interlock LED 66 is provided on powersupply 29. Push button switch “Push for control” 67 is pressed to startcurrent setting unit 68. The value displayed in current setting unit 68can be varied by current variable knob 69. Current setting unit 68 isprovided to have desired watt for cutting the surrounding excesssurfaces of rough diamond 5. Heat exchanger 25 & Power supply 29 areaccommodated in trolley 99.

Example:

The required heat in form of laser beam to cut the surrounding excesssurface of the rough diamond 5 depends on the diamond quality. Supposingfor a rough diamond 5 the required watt to cut the surrounding excesssurface is 25 watt and to have such value current variable knob 69 ofpower supply 29 is allowed to move until 25 watt is achieved in wattmeter.

Application & Functioning of Heat Exchanger 25:

A large quantity of heat is generated inside the pumping cavity of lasersource 27 when laser is produced. If the heat is not removed from thepumping cavity of laser source 27 then it will cause lamp and rod to getdamaged and therefore a proper arrangement of heat distribution in termsof heat exchanger 25 is provided to processing device 4. The heat fromDe-ionized water is subsequently removed by chilling system 38. Thetemperature of De-ionized water is regulated by means of solenoid, whichturns outside water flow from chilling system 38 on and off as required.

Heat exchanger 25 consist of (i) Cooling system 37 (ii) Chilling system38 and (iii) Interlock system 39. Cooling system 37 circulatesde-ionized water from Heat exchanger 25 to Laser head 43 & Q-Switch 42and vice versa. Also chilling system 38 circulates water from heatexchanger 25 to chilling pump system s and vice versa.

In heat exchanger 25 water circulation from chilling pump system 48decreases the temperature of incoming de-ionized water at significantlevel and provides de-ionized water having less temperature to laserhead 43 and Q-switch 42. Flow of water from chilling system 38 used fordecreasing temperature of incoming de-ionized water from cooling system37 is getting heated and hence temperature of such water increases. Thetemperature of such water is required to decrease by means of chillingpump system 48. Chilling pump system 48 consists of split tank 71 andchilling water tank 70.

Example:

Supposing display of digital temperature controlling unit 72 of HeatExchanger 25 shows temperature of de-ionized water as 35° C. Now if itis required that temperature of de-ionized water should be 30° C. thenpress SET switch of digital temperature controlling unit 72 for fewseconds. When present temperature of de-ionized water (35° C.) blinksthen press up/down push button switches until required temperature 30°C. displayed on the display of digital temperature controlling unit 72.Press the SET push button switch of digital temperature controlling unit72 when 30° C. displayed on display of digital temperature controllingunit 72. After few moments as temperature of de-ionized water is set at30° C. the chilling pump system 48 of Heat exchanger 25 which decreasesthe temperature of incoming de-ionized water stops working. Thoughfunctioning of chilling pump system 48 remains continue.

Functioning of Chilling Pump System 48 of Heat Exchanger 25:

Digital temperature control unit 73 is provided to chilling water tank70. When in display of digital temperature control unit 73 if value ofpresent water temperature is significantly higher than the value of setwater temperature then split tank 71 starts working and if value ofpresent water temperature remains around the value of set watertemperature then split tank 71 stops working. In this way the Chillingpump system 48 saves the power substantially.

Hence with the Heat exchanger 25, temperature can be maintained and thesame saves the machine from getting overheated.

IN port 74 of Heat exchanger 25 is connected to one end of Teflonconnector 75 via hose pipe 82 while other two ends of Teflon connector75 are connected to OUT port 76 of laser head 43 and OUT port 77 ofQ-switch 42 via hose pipes 83,84 respectively. OUT port 78 of Heatexchanger 25 is connected to one end of Teflon connector 79 via hosepipe 85 while other two ends of Teflon connector 79 are connected to INport 80 of laser head 43 and IN port 81 of Q-switch 42 via hose pipes86,87 respectively. OUT port 78 of Heat exchanger 25 provides de-ionizedwater to Laser head 43 and Q-switch 42 through IN port 80 and IN port 81respectively while due to laser heat warm de-ionized water come out fromOUT port 76 and OUT port 77 of Laser head 43 and Q-switch 42respectively and enters into Heat exchanger 25 through IN Port 74.

Chilling OUT port 88 of Heat exchanger 25 is connected to TN port 89 ofchilling water tank 70 via hose pipe 95 and OUT port 90 of Chillingwater tank 70 is connected to IN port 91 of Split tank 71 via hosepipe96. OUT port 92 of split tank 71 is connected to dual port 93 ofchilling water tank 70 via hose pipe 97 and other end of dual port 93 ofchilling water tank 70 is connected to Chilling IN port 94 of Heatexchanger 25 via hose pipe 98.

Water used to decrease the temperature of de-ionized water becomes warmand comes out from chilling OUT port 88 of Heat exchanger 25 and travelstoward IN port 89 of chilling water tank 70. Then this warm watertravels into split tank 71 and split tank 71 decreases temperature ofwarm water and provides such water to chilling water tank 70 and fromchilling water tank s water travels into Heat exchanger b through INport 94.

Functioning of Beam Delivery Mechanism 26 of Processing Device 4:

If bruting process is selected on monitor 24 through software installedin computer 21, laser beam falls on sliding beam bender 56. Then laserbeam falls on lower beam bender 57 from which it travels towards lowerfocusing device 58 and hence focused laser beam falls on side of a roughstone 5 accommodated on diamond holder 8.

If Girdle polishing process is selected on monitor 24 through softwareinstalled in computer 21 then laser beam falls on upper beam bender 59bypassing sliding beam bender 56. Now laser beam passes through upperfocusing device 60 and hence focused laser beam falls on rough stone 5accommodated on diamond holder 8.

Also upper focusing device 60 and lower focusing device 58 haveilluminating component to illuminate rough diamond 5 by means ofplurality of surrounding LED's for watching bruting process or girdlepolishing process on CCTV 32.

Functioning of CNC Interface of Processing Device 4:

Motorized Rotatable Platform 23:

Surrounding excess surface of rough diamond 5 is removed by laser beamdue to rotation of motorized rotatable Platform 23 on which diamondholder 8 is mounted horizontally. To drive the motorized rotatableplatform 23, stepper motor is used.

Motorized Y-Axis Positioner 30 and Motorized X-Axis Positioner 31:

During Bruting process, laser beam dipping into rough diamond 5gradually until the maximum diameter 61 or cylindrical shape of thediamond achieved for which displacement of rough diamond 5 throughmotorized rotatable platform 23 on Y-axis and/or X-axis is requiredwhich is accomplished by motorized Y-axis positioner 30 and/or motorizedX-axis positioner 31. Motorized Y-axis positioner 30 is mounted onMotorized X-axis positioner 31 in such a way that Motorized Y-axispositioner 30 can travel on Motorized X-axis positioner 31. Displacementof motorized X-axis positioner 31 and/or motorized Y-axis positioner 30is done automatically or by manual data feed through software installedin computer 21.

Movement of Motorized Y-axis positioner 30, Motorized X-axis positioner31 and rotation of motorized rotatable platform 23 are controlled bycontrol card installed in computer 21.

As Y-drive card 33 is connected to computer 21 & motorized Y-axispositioner 30, it amplifies the electronic signal coming from computer21 and send amplified signal to motorized Y-axis positioner 30.Similarly X-drive card 34 and R-drive card 35 send amplified electronicsignals to Motorized X-axis positioner 31 and Motorized Rotatableplatform 23 respectively. Y-drive card 33, X-drive card 34 and R-drivecard b can be switched on/off through drive card power supply 36connected to them. Motorized Y-axis positioner 30 and Motorized X-axispositioner 31 are driven by stepper motors. Also limit switches areprovided to each end of Motorized Y axis positioner 30, Motorized X axispositioner 31 & motorized rotatable platform 23 to sense the home & endposition.

A rough diamond 5 to be processed for bruting or girdle polishing can bewatched on CCTV 32 through video system of processing device 4 consistof upper CCD camera 52 and lower CCD camera 53.

As, laser bruting being a non-contact process gives more speed, reducesweight loss significantly and keeps the shape of diamond uniform. Innovel laser bruting machine the computer becomes an important element incutting of diamond. With the standard software computer suggest anoptimal cut to have accurate rounded shape of the diamond takingdimensions & shape into account. Also the rough-diamond stone to becentered and bruted is lit up by illuminating sources and theseilluminating sources consist of plurality of LED's so the eye gets theimpression that is always the same side of the stone that is lit andhence the illuminated rough diamond can be watched on CCTV through videosystem consist of CCD cameras. This is a useful technique, because novelbruting machine can check the process at all times without stopping themachine and the same can be operated by a single person. Summing up allthe advantages productivity increases significantly by using novel laserbruting machine.

1. A laser bruting machine, comprising: a diamond holder, a setup deviceand a processing device the diamond holder including a stitching die, amagnetic die and a rough diamond; the setup device including a CNCinterface, and a video system; and the processing device including a CNCinterface, a heat exchanger, a video system, a beam delivery mechanism,a laser source, a RF-Q Switch driver, a power supply and a stabilizer.2. A laser bruting machine as claimed in claim 1, wherein a roughdiamond is stitched on top of the stitching die by adhesive and heat;the stitching die and the rough diamond are fixed on top of magneticdie.
 3. A laser bruting machine as claimed in claim 1, wherein the CNCinterface of the setup device has a motorized X axis positioner, amotorized rotatable platform, a motorized up and down positioner, drivecards, a control card, a computer 16, monitor, three stepper motors, anda drive card power supply.
 4. A laser bruting machine as claimed inclaim 3, wherein the motorized X axis positioner, the motorizedrotatable platform, and the motorized up and down positioner are drivenby the stepper motors.
 5. A laser bruting machine as claimed in claim 4,wherein one end of each of the drive cards is connected to the motorizedX-axis positioner, the motorized up and down positioner and themotorized rotatable platform respectively, and the other end of each ofthe drive cards is connected to the drive card of the computer through apin connector; and the drive cards are connected to the drive card powersupply.
 6. A laser bruting machine as claimed in claim 5 wherein motionof the motorized X axis positioner, the motorized rotatable platform,and the motorized up and down positioner is controlled by the drive carddisposed in the computer; and limit switches are provided to each end ofthe motorized X axis positioner, the motorized rotatable platform, themotorized up and down positioner to sense home and end positions.
 7. Alaser bruting machine as claimed in claim 1, wherein the video system ofthe setup device is connected to the computer and has an upper CCDcamera and a lower CCD camera.
 8. A laser bruting machine as claimed inclaim 3, wherein the CNC interface of the processing device has amotorized Y-axis positioner, a motorized rotatable platform, a motorizedX axis positioner, a computer, a monitor, CCTV, a Y drive card, an Xdrive card, a R drive card, a drive card power supply, three steepermotors, and a control card.
 9. A laser bruting machine as claimed inclaim 8, wherein the motorized Y-axis positioner, the motorizedrotatable platform, and the motorized X axis positioner 31 are driven bystepper motors.
 10. A laser bruting machine as claimed in claim 9,wherein one end of the Y drive card, the R drive card and the X drivecard 34 are connected to the motorized Y-axis positioner, the motorizedrotatable platform and the motorized X axis positioner respectively andthe other end of the Y drive card, the R drive card, the X drive cardare connected to the control card of the computer through a pinconnector, the Y-drive card, the X drive card, and the R drive card 35are connected to the drive card power supply.
 11. A laser brutingmachine as claimed in claim 8, wherein motion of the motorized Y-axispositioner, the motorized rotatable platform, the motorized X axispositioner are controlled by the control card of the computer.
 12. Alaser bruting machine as claimed in claim 8, wherein displacement of therough diamond of the diamond holder via the motorized rotatable platformon the Y-axis and the X-axis is accomplished by the motorized Y-axispositioner and the motorized X-axis positioner respectively; themotorized Y-axis positioner and the motorized X-axis positioner aremounted in such a way that the motorized Y-axis positioner travels onthe motorized X-axis positioner.
 13. A laser bruting machine as claimedin claim 8, wherein limit switches are provided to each end of themotorized Y axis positioner, the motorized X axis positioner and themotorized rotatable platform to sense the home and end positions.
 14. Alaser bruting machine as claimed in claim 1, wherein the video system ofthe processing device is connected to the computer and has an upper CCDcamera and a lower CCD camera.
 15. A laser bruting machine as claimed inclaim 1, wherein the heat exchanger of the processing device isconnected to the power supply and the FRQ-switch drive; the digitaltemperature controller and LED's of interlock controller for flow, level& temperature indication of de-ionized water, the pump on and off knob,and the pump LED are accommodated in the heat exchanger.
 16. A laserbruting machine as claimed in claim 15, wherein the heat exchanger has acooling system 37, and a chilling system 38, the cooling systemcirculates de-ionized water while the chilling system circulates water;the cooling system in port of the heat exchanger is connected to one endof a Teflon connector via hose pipe while the other two ends of theTeflon connector are connected to out port of laser head and the outport 77 of the Q-switch via hose pipes respectively; out port of theheat exchanger is connected to one end of the Teflon connector via thehose pipe while the other two ends of the Teflon connector are connectedto the in port of the laser head and the in port of the Q-switch viahose pipes respectively; the chilling system has a chilling pump system;the chilling pump system has a split tank, and a chilling water tank;the digital temperature controller is connected to the chilling watertank; the chilling out port the chilling in port of the heat exchangerare connected to the chilling pump system; the chilling out port of theheat exchanger is connected to the in port of the chilling water tankvia the hose pipe and the out port of the chilling water tank isconnected to the in port of the split tank 71 via hosepipe 96; the outport of the split tank is connected to the dual port of the chillingwater tank via the hose pipe and the other end of dual port of thechilling water tank is connected to the chilling in port 94 of the heatexchanger via hose pipe.
 17. A novel laser bruting machine as claimed inclaim 1, wherein a beam delivery mechanism of the processing device hasa bruting process system and a girdle polishing system.
 18. A laserbruting machine as claimed in claim 17, wherein the bruting processsystem has a sliding beam bender, a lower beam bender, and a lowerfocusing device.
 19. A laser bruting machine as claimed in claim 18,wherein the girdle polishing system has an upper beam bender 59 and anupper focusing device; the sliding beam bender, the lower beam benderand the upper beam bender are placed substantially 45° with respect tothe incoming laser beam; each of the beam benders bends the laser beamsubstantially 90°; the lower focusing device and the upper focusingdevice focuses the incoming laser beam; the lower focusing device andthe upper focusing device have an illuminating source to illuminate therough diamond; each illuminating source of the lower focusing device andthe upper focusing device have a plurality of LED's.
 20. A laser brutingmachine as claimed in claim 1, wherein the laser source has a backmirror, apertures, a Q-switch, a laser head, a shutter, a polariser, afront mirror 46 and a beam expander.
 21. A laser bruting machine asclaimed in claim 1, wherein the RF Q Switch drive is connected to thecomputer, the Q-Switch and the heat exchanger.
 22. A laser brutingmachine as claimed in claim 1, wherein a stabilizer is connected to thepower supply; a T.P. switch, a laser lamp on and off toggle switch, acurrent setting unit, a push button on and off switch of the currentsetting unit, and a current variable knob are connected to the powersupply.
 23. A laser bruting machine as claimed in claim 8, wherein thecomputers are connected by LAN.